https://www.space.com/mars-helicopter-ingenuity-first-flight-photo

 

helicopter = *{wa’ vo’wI’ muD [Do] Duj} – on the model of {wa’ rutlh qam Do Duj } “unicycle”?

IIRC Qov (who is a pilot IRL) once suggested *{vo'wI'} for propeller from {vo’} “propel”.